Help the compiler to catch more printf-related problems.
Help the compiler to catch more printf-related problems.

* subversion/include/private/svn_debug.h (svn_dbg__printf): Add missing
  printf-format attribute declaration.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@880300 13f79535-47bb-0310-9956-ffa450edef68

wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion